/*
MD_Parola - Library for modular scrolling text and Effects
  
See header file for comments
  
Copyright (C) 2013 Marco Colli. All rights reserved.

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <MD_Parola.h>
#include <MD_Parola_lib.h>
/**
 * \file
 * \brief Implements closing effect
 */

void MD_PZone::effectClose(bool bLightBar, bool bIn)
// Dissolve the current message in/out
{
	if (bIn)
	{
		switch (_fsmState)
		{
		case INITIALISE:
		case GET_FIRST_CHAR:
		case GET_NEXT_CHAR:
			PRINT_STATE("I CLOSE");
			_nextPos = 0;
			zoneClear();
			if (bLightBar)
			{
				_MX->setColumn(_limitLeft, LIGHT_BAR);
				_MX->setColumn(_limitRight,LIGHT_BAR);
			}
			_fsmState = PUT_CHAR;
			// fall through

		case PUT_CHAR:
			PRINT_STATE("I CLOSE");
			FSMPRINT(" - offset ", _nextPos);
			zoneClear();
			commonPrint();
			{
				const uint16_t	halfWidth = (_limitLeft - _limitRight)/2;

				if (_nextPos > halfWidth)
				{
					_fsmState = PAUSE;
				}
				else
				{
					for (uint16_t i = _limitRight + _nextPos + 1; i < _limitLeft - _nextPos; i++)
						_MX->setColumn(i, EMPTY_BAR);

					_nextPos++;
					if (bLightBar && (_nextPos <= halfWidth))
					{
						_MX->setColumn(_limitLeft - _nextPos, LIGHT_BAR);
						_MX->setColumn(_limitRight + _nextPos, LIGHT_BAR);
					}
				}
			}
			break;

		default:
			PRINT_STATE("I CLOSE");
			_fsmState = PAUSE;
		}
	}
	else	// exiting
	{
		switch (_fsmState)
		{
		case PAUSE:	

		case GET_FIRST_CHAR:
		case GET_NEXT_CHAR:
			PRINT_STATE("O CLOSE");
			FSMPRINT(" - limits R:", _limitRight);
			FSMPRINT(" L:", _limitLeft);
			_nextPos = (_limitLeft-_limitRight)/2;
			FSMPRINT(" O:", _nextPos);
			zoneClear();
			commonPrint();
			if (bLightBar)
			{
				_MX->setColumn(_limitLeft - _nextPos, LIGHT_BAR);
				_MX->setColumn(_limitRight + _nextPos, LIGHT_BAR);
			}
			_fsmState = PUT_CHAR;
			break;

		case PUT_CHAR:
			PRINT_STATE("O CLOSE");
			FSMPRINT(" - offset ", _nextPos);
			if (_nextPos < 0) 
			{
				_fsmState = END;
			}
			else
			{
				_MX->setColumn(_limitLeft - _nextPos, EMPTY_BAR);
				_MX->setColumn(_limitRight + _nextPos, EMPTY_BAR);

				_nextPos--;
				if (bLightBar && (_nextPos >= 0))
				{
					_MX->setColumn(_limitLeft - _nextPos, LIGHT_BAR);
					_MX->setColumn(_limitRight + _nextPos, LIGHT_BAR);
				}
			}
			break;

		default:
			PRINT_STATE("O CLOSE");
			_fsmState = END;
		}
	}
}
